Method setProgram

Source/Graphics/shaders.cpp:931–948

Bind a shader program

// Bind a shader program
void Shaders::setProgram(int which) {
    if (which == -1) {
        noProgram();
        return;
    }
    if (bound_program == which) return;
    CHECK_GL_ERROR();
    if (programs[which].gl_program == UNLOADED_SHADER_ID) {
        if (create_program_warning) {
            LOGW << "Loading shader which should be preloaded. " << level_path.GetOriginalPath() << ": " << programs[which].name << std::endl;
        }
        createProgram(which);
    }
    glUseProgram(programs[which].gl_program);
    Textures::Instance()->InvalidateBindCache();
    bound_program = which;
    CHECK_GL_ERROR();
}

// Stop using shaders
void Shaders::noProgram() {